is a small anemone which possesses the largest cnidocysts within the Cnidaria. Your TA will snip off a small piece of tentacle material which will be placed in 95% ethanol for 3-5 minutes, replaced upon a microscope slide to dry, and then while you have the preparation inview and covered with a slip, you add aquaeous methylene blue dye to the tissue. By so doing, youwill elicit the slow discharge of the cnidocysts.
Various anemones including Anthopleura a green species which contains algal symbionts. Your TA will have a television display showing zooxanthellae from this local cnidarian. Be sure to review the size, appearance, and location of these symbionts Symbiodinium microadiatricum.
A living preparation of the filter-feeding anemone Metridium is from the same genus as the material that you will be dessecting as a preserved specimen. Observe the fine tentacle structure and how it may be used to filter food from the water. Compare its feeding methods with those of Anthopleura.
Plankton Tow. Carefully examine the live container of sea water containing various hydromedusae, schyphomedusae and ctenophores taken by plankton net for an area just outside Burrard Inlet. Observe differences in swimming & feeding between these groups.
Prepared Slides: Be sure to take only one microscope preparation at a time from the box on your table. These slides include the following organisms and reproductive stages:
Goninemus, Obelia, Pennaria,Tubularia.
Aurelia ephyra larvae, planula larvae, strobila, and scyphistoma stages.
Metridium cross sections & long sections.